Dimitrova, Milena, Galin Ivanov, Kiril Mihalev, Alexander Slavchev, Ivelina Ivanova, & Radka Vlaseva. " Investigation of antimicrobial activity of polyphenol-enriched extracts against probiotic lactic acid bacteria." Food Science and Applied Biotechnology [Online], 2.1 (2019): 67-73. Web. 21 Aug. 2019